On-line global maximum power point (GMPP) identification of solar PV plants

摘要

This paper introduces an algorithm to identify the global maximum power point (GMPP) of a solar Photovoltaic (PV) plant while operating under the partial shade condition (PSC) or fault condition (FC). Conventionally a complete current vs. voltage (or I-V) curve of the faulty PV array is swept to identify the GMPP. However, this paper proposes that a part or `region of interest' of the I-V curve would be sufficient to identify the GMPP, and there is no need to sweep complete I-V curve. For verification purposes, real-time experimental tests were conducted.